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EP2879146A1 - Bindung zur Betätigung einer Trennschalterklinge zur Synchronisation eines SBS mit einem Trennschalter von RMU - Google Patents

Bindung zur Betätigung einer Trennschalterklinge zur Synchronisation eines SBS mit einem Trennschalter von RMU Download PDF

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Publication number
EP2879146A1
EP2879146A1 EP14306844.3A EP14306844A EP2879146A1 EP 2879146 A1 EP2879146 A1 EP 2879146A1 EP 14306844 A EP14306844 A EP 14306844A EP 2879146 A1 EP2879146 A1 EP 2879146A1
Authority
EP
European Patent Office
Prior art keywords
switch
disconnector
linkage
disconnector switch
link
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP14306844.3A
Other languages
English (en)
French (fr)
Inventor
Sanjay D. Gogawale
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schneider Electric Industries SAS
Original Assignee
Schneider Electric Industries SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schneider Electric Industries SAS filed Critical Schneider Electric Industries SAS
Publication of EP2879146A1 publication Critical patent/EP2879146A1/de
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/42—Driving mechanisms, i.e. for transmitting driving force to the contacts using cam or eccentric
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/46—Driving mechanisms, i.e. for transmitting driving force to the contacts using rod or lever linkage, e.g. toggle
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • H01H33/6661—Combination with other type of switch, e.g. for load break switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • H01H2033/6667—Details concerning lever type driving rod arrangements

Definitions

  • the present invention generally relates to linkage design (transmission mechanism) which serves as an actuating device for disconnector switch blade.
  • the present invention relates to linkage design in order to integrate a SBS (Shunt Breaking System) in existing disconnector switch of Ring Main Unit (RMU), which fulfills synchronization requirement of the SBS-Shunt Breaking System that is incorporated in designated disconnector switch.
  • SBS Small Breaking System
  • RMU Ring Main Unit
  • a power supply line of an electric load, to be controlled, is conventionally provided with at least one switchgear device.
  • a switchgear device comprises pairs of contacts for each phase movable with respect to one another to switch the load. Actuation of the contacts can be performed in different manners.
  • a high electrodynamic strength is required and the contacts are driven by a lever system coupled to a rotary spindle. Further, the rotary spindle is itself actuated by a tumbler mechanism.
  • disconnector switch gets required energy from mechanism through intermediate linkages comprising rotary drive shaft and coupler.
  • the existing four bar linkage design transfers the energy and stroke to moving blades offered by tumbler mechanism.
  • the fixed stroke of the mechanism presently used in RMU is having stroke of 40 deg whereas SBS is designed for 50 deg stroke requirement.
  • the main object of the present invention is to provide linkage design in order to integrate SBS in existing disconnector switch of RMU, which may fulfill synchronization requirement of the SBS-Shunt Breaking System which is incorporated in designated disconnector switch.
  • Another object of the present invention is to provide linkage design in order to integrate SBS in existing disconnector switch of RMU, which provides solution to reuse existing mechanism by delivering enlarged output stroke which is suitable to operate SBS.
  • Another object of the present invention is to provide linkage design in order to integrate SBS in existing disconnector switch of RMU, which may fulfill Critical to Quality (CTQ) requirement of SBS such as TRV position, minimum speed and Vacuum Interrupter (VI) opening.
  • CQ Critical to Quality
  • VI Vacuum Interrupter
  • Another object of the present invention is to provide linkage design in order to integrate SBS in existing disconnector switch of RMU, which guaranties the instantaneous position achieved by moving blade of disconnector switch with desired speed requirement.
  • Another object of the present invention is to provide linkage design in order to integrate SBS in existing disconnector switch of RMU, which is simple in construction and assures accurate functioning.
  • the present invention discloses a linkage for actuating a disconnector switch blade in order to integrate a Shunt Breaking System (SBS) in existing disconnector switch of Ring Main Unit (RMU) which fulfill synchronization requirement of the SBS that is incorporated in said disconnector switch.
  • the linkage includes a plurality of follower links connected to an offset link disposed over a drive shaft, a drive link for transferring mechanism energy to the plurality of follower links through a sliding pin joint which is directly pivoted to the offset link for ensuring the synchronization within disconnector switch and SBS, wherein the linkage enlarges the stroke of the disconnector switch blade during switch open and switch closed operations and maintains the stroke same as disconnector switch mechanism during switch earth operation.
  • the offset link is fixed over drive shaft at offset from centre of drive shaft to provide enlarged stroke of the disconnector switch blade in switch closed and switch open operations.
  • the driving link includes slot and is used to drive the linkage formed by the off-set link along with the disconnector switch blade of the disconnector switch.
  • the off-set link is configured to regulate the speed of the disconnector switch blade by guiding the pivot pin in the slot of the driver link.
  • the linkage is configured to maximize speed of the disconnector switch blade during switch open and switch closed operations.
  • Disclosed herein is a linkage design in order to integrate SBS in existing disconnector switch of RMU which fulfill synchronization requirement of the SBS-Shunt Breaking System that is incorporated in the disconnector switch.
  • the drive mechanism operates the disconnector switch rotary shaft with fix stroke during switch open, switch close and switch earth operations.
  • the present linkage design enlarges the stroke of the moving blade during switch opening and switch closing operations and it also keeps the maximum speed of moving contacts. However during the switch earth operation, it maintains the stroke same as the mechanism.
  • FIG. 1 schematically illustrates such a linkage design 100 including an offset links 104 fixed over drive shaft at offset distance from centre of drive shaft to provide enlarged stroke of blade in switch close and switch open operation in accordance with one embodiment of the present invention.
  • a driving link 102 is connected to rotating drive shaft 202 as shown in FIG.2 .
  • the driving link 102 includes slot and is used to drive four bar linkage formed by off-set link 104 along with moving contact of the disconnector switch.
  • the fifth additional link (the offset link) 104 is fixed at off-set distance from centre of the drive shaft 202 and it is pivoted at extreme end of slot away from centre of shaft while in closed position.
  • the offset link 104 is formed by making slot with fixed radius as shown in FIG. 3 which is placed at offset distance away from drive shaft centre and placed as stationary part over rotating drive shaft.
  • Input for the drive link 102 is received from tumbler mechanism which is designed for 40 degree stroke.
  • the linkage design rotates moving contacts of disconnector switch faster in initial stage in order to reach TRV position faster. Further, the linkage design ensures motion transfer to SBS fulfills the synchronization criteria of CTQ phase such as TRV distance, minimum Vacuum interrupter (VI) opening speed and total VI opening.
  • the moving blade enters in CTQ phase after travelling around 30 - 35% of stroke and it lasts till 90% of stroke.
  • the duration of moving contact in CTQ phase is about 35 - 40%.
  • the mean velocity of moving blade in CTQ phase is at least thrice as high as in initial phase.
  • FIG. 4 - 6 and FIG. 7 - 9 illustrate the close, open and earth positions respectively in accordance with one embodiment of the present invention.
  • the pivoted pin of the offset link 404 slides in slot and converts the output stroke into 50 degree.
  • the drive mechanism energy transferred to moving contact through four bar linkage decides the resultant speed and position of the moving contacts.
  • the off-set location and angles formed by linkages governs the speed of the moving contacts. This may be optimized with the help of theoretical simulation performed by pro-mechanism.
  • the output of simulation recorded in travel and speed graphs are analyzed and accordingly position and dimensions of the linkages are finalized.
  • FIG. 10-11 show the output recorded in travel and speed graphs for particular positions and dimensions of the linkages according to one embodiment of the present invention.
  • drive link (406, 708), off-set link (404, 706), coupler (402, 704), follower link/ moving contact (410, 702) are designed based on available space in the RMU.
  • the sliding pin joint reduces wear and friction losses which results in higher accuracy and reliability.
  • the off-set link in form of off-centre radial slot around drive shaft is simple in construction and assures accurate functioning of the linkage design. Further, the offset link forms parallelogram in four bar linkage which helps in efficient torque/movement transmission to moving contacts.

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Gas-Insulated Switchgears (AREA)
EP14306844.3A 2013-11-29 2014-11-20 Bindung zur Betätigung einer Trennschalterklinge zur Synchronisation eines SBS mit einem Trennschalter von RMU Withdrawn EP2879146A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IN1351KO2013 IN2013KO01351A (de) 2013-11-29 2013-11-29

Publications (1)

Publication Number Publication Date
EP2879146A1 true EP2879146A1 (de) 2015-06-03

Family

ID=51982504

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14306844.3A Withdrawn EP2879146A1 (de) 2013-11-29 2014-11-20 Bindung zur Betätigung einer Trennschalterklinge zur Synchronisation eines SBS mit einem Trennschalter von RMU

Country Status (3)

Country Link
EP (1) EP2879146A1 (de)
CN (1) CN104681346B (de)
IN (1) IN2013KO01351A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105448553A (zh) * 2015-12-08 2016-03-30 株洲庆云电力机车配件工厂有限公司 一种接地保护开关

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE696410C (de) * 1937-12-18 1940-09-20 Aeg Nockenschalter mit Hauptkontakten und mehreren mit diesen in Reihe geschalteten Vor-und Abreisskontaktgruppen
GB1078915A (en) * 1964-10-13 1967-08-09 James R Kearney Corp Of Canada Electrical switch
EP0302721A2 (de) * 1987-08-06 1989-02-08 Square D Company Schalteranordnung
DE4305512A1 (de) * 1993-02-16 1994-08-18 Siemens Ag Antrieb für einen elektrischen Leistungsschalter
DE102005013231B3 (de) * 2005-03-18 2006-09-21 Siemens Ag Kurvenprofilschalter
EP2178099A1 (de) * 2008-10-14 2010-04-21 AREVA T&D AG Elektrisches Schaltgerät mittlerer oder hoher Spannung mit zwei Schaltern, das Antriebsmittel umfasst, die den mobilen Kontakten der Schalter gemein sind
EP2182536A1 (de) 2008-10-29 2010-05-05 Areva T&D Sas Stromunterbrechungsschalter in einer Stromleitung, die eine Vakuumlampe umfasst
EP2479769A1 (de) 2011-01-25 2012-07-25 Schneider Electric Industries SAS Mittelspannungs-Abschaltungsvorrichtung einschließlich einer Vakuumlampe

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202120807U (zh) * 2011-01-07 2012-01-18 陕西银河电气设备有限公司 一种机械闭锁机构
CN203134651U (zh) * 2013-03-01 2013-08-14 无锡飞世龙机电有限公司 一种环网柜熔断器/接地一体型操作机构

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE696410C (de) * 1937-12-18 1940-09-20 Aeg Nockenschalter mit Hauptkontakten und mehreren mit diesen in Reihe geschalteten Vor-und Abreisskontaktgruppen
GB1078915A (en) * 1964-10-13 1967-08-09 James R Kearney Corp Of Canada Electrical switch
EP0302721A2 (de) * 1987-08-06 1989-02-08 Square D Company Schalteranordnung
DE4305512A1 (de) * 1993-02-16 1994-08-18 Siemens Ag Antrieb für einen elektrischen Leistungsschalter
DE102005013231B3 (de) * 2005-03-18 2006-09-21 Siemens Ag Kurvenprofilschalter
EP2178099A1 (de) * 2008-10-14 2010-04-21 AREVA T&D AG Elektrisches Schaltgerät mittlerer oder hoher Spannung mit zwei Schaltern, das Antriebsmittel umfasst, die den mobilen Kontakten der Schalter gemein sind
EP2182536A1 (de) 2008-10-29 2010-05-05 Areva T&D Sas Stromunterbrechungsschalter in einer Stromleitung, die eine Vakuumlampe umfasst
EP2479769A1 (de) 2011-01-25 2012-07-25 Schneider Electric Industries SAS Mittelspannungs-Abschaltungsvorrichtung einschließlich einer Vakuumlampe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105448553A (zh) * 2015-12-08 2016-03-30 株洲庆云电力机车配件工厂有限公司 一种接地保护开关

Also Published As

Publication number Publication date
CN104681346A (zh) 2015-06-03
CN104681346B (zh) 2018-10-26
IN2013KO01351A (de) 2015-06-05

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